title: Mediastinal hydatid cyst: a case report.
abstract: BACKGROUND
  Mediastinal localization of hydatidosis is very rare even in endemic areas. The diagnosis is based on typical clinical and radiological criteria.
  
  
  METHODS
  We report a case of a mediastinal location of hydatidosis in a 60-year-old Arab man admitted for chest pain. The chest radiograph showed a rounded and homogeneous opacity. Computed tomography showed a right mediastinal cyst, without other thoracic or abdominal sites. Through a posterolateral thoracotomy, we found a cystic mass in the posterior mediastinum. The patient received a cystectomy with medical treatment based on albendazole. He improved a few weeks later.
  
  
  CONCLUSIONS
  Mediastinal cysts remain rare, even in endemic countries, which makes initial diagnosis difficult. Our observation shows the importance of keeping this diagnosis in mind when a patient presents with signs of mediastinal compression.
authors.affiliation: Service de chirurgie viscérale, CHU Mohamed VI, Marrakech, Morocco. msougar@hotmail.com.
authors.forename: Yassine
authors.initials: Y
authors.lastname: Msougar
authors.forename: Oussama
authors.initials: O
authors.lastname: Afandi
authors.forename: Nadia
authors.initials: N
authors.lastname: Ihfa
authors.forename: Yassine
authors.initials: Y
authors.lastname: Baiz
authors.forename: Youness
authors.initials: Y
authors.lastname: Rouiessi
authors.forename: Mohamed
authors.initials: M
authors.lastname: Khellouki
authors.forename: Benacer
authors.initials: B
authors.lastname: Finech